The Efficiency of Belled Piles in Multi-Layers Soils Subjected to Axial Compression and Pullout Loads: Review. Journal of Engineering, [S. l.], v. 29, n. 09, p. 166–183, 2023. DOI: 10.31026/j.eng.2023.09.12. Disponível em: https://www.joe.uobaghdad.edu.iq/index.php/main/article/view/1739. Acesso em: 25 apr. 2025.